请问“to be questioned”在该句中的成分是什么

onetwothree

原句：The witness went on the witness stand  to be questioned by the prosecution
  O; n6 b! V: k5 i2 @% [/ U3 j$ r& v
# g% ?' X/ ~( c( ~& ?+ `我自己的句型分解是 the witness是主语，went on是动词，the witness stand是宾语，by the prosecution是修饰语，我就不太清楚 to be questioned 充当什么成分

请教一下各位朋友们。感谢每一位热心帮助的朋友

sabrina2111

后置定语  比如 a book to be read 将要读的一本书

yuqinghuaz1

主语补语

onetwothree

sabrina2111 发表于 2020-5-17 10:20
: D) ]& `+ ]  d$ x: |+ F后置定语  比如 a book to be read 将要读的一本书

谢谢

deepbluedic

The witness went on the witness stand to be questioned by the prosecution.

9 \* W! ~" Y5 Y! P8 Q% h# R"To be questioned" 是否可以理解为 动词不定式 做非谓语 表示目的。
* \/ Y; n- x2 e; z" D! W表明目击证人走上证人席等待被询问。

语句也可调整为：
6 i3 H$ k) q- e. `To be questioned by the prosecution the witness went on the witness stand.

mxh3698

The witness went on the witness stand  to be questioned by the prosecution
4 g$ _  {; Z5 p证人               走上            证人席          接受  控方           的盘问。

He  went to the cinema to watch a movie he had been looking forward for quite some time.
He went to the barber's to have his hair cut.

9 v* m( {% Z5 x" w目的状语